On Tue, May 12, 2009 at 2:35 PM, Zeljko Vrba <zv...@ifi.uio.no> wrote: > Aha, so you DON'T have only red and green rectangles in the picture, there is > also white in between, and some pale delimiter lines. Nevertheless, both > things ease the job slightly, and the approach I described should work. You > can even script it by using ImageMagick and ghostscript. > > If all pictures are of the same size and layout, you could even manually > (or programataically) construct a "mask" of rectangle midpoints, so you > don't have to detect transitions between red/green and white, which will > enormously simplify the job. [Note that the distance between rectangle > centers is uniform in both directions.]
I thank again both Zeljko and Baptiste. Meanwhile, I found out a more or less simple way of solving the problem: 1. edited the pdf file with Inkscape, inserting 0 or 1 over the rectangles; 2. saved the pdf file; 3. opened it with Acrobat Reader, and selected, as text, the 0 and 1 inserted; 4. pasted the 0 and 1 into a text editor. And that was done! Paul ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.